posted on 2018-03-06, 19:38authored byStephanie L. Outcalt
A vibrating-tube densimeter has been
used to measure compressed-liquid
densities of the fluids pentaerythritol tetrapentanoate (POE5), pentaerythritol
tetraheptanoate (POE7), pentaerythritol tetranonanoate (POE9), and
a fully qualified lubricant within a temperature range of 270 to 470
K at pressures within 0.5 to 50 MPa. The compressed-liquid densities
of the lubricants studied cover a density range from 829 kg/m3 to 1063 kg/m3. The data have been extrapolated
to atmospheric pressure and correlated with a Racket equation and
the compressed-liquid density data have been correlated to Tait equations
for comparison to existing literature data.